Device for rapidly stopping compound steam-engines.



K. LINCK.

DEVIGEFOR BAPIDLY STOPPING COMPOUND STEAM ENGINES. APPLICATION FILEDJULY 16,1907. 984,012, Patented Feb. 14, 1911,

2 BHEETS-8HEET 1.

I 4 13 I 1 i f f" I I I i 4 E l l- .1

ms ubmws PE1ERS ca, Wlsnlucm", n. c.

v K. LINGK. DEVIGB FOR RAPIPLY STOPPING COMPOUND STEAM ENGINES.

APPLIOATION IILED'JULY 15,1907.

, Patented Feb. 14,1911.

2 SHEETS-SHEET z.

WI/E/I/T P THE nonms PETER: 70., wisumarcu. n. c.

KARL LINCK, OF HOMBURG, GERMANY.

DEVICE FOR RAPIDLY STOPPING COMPOUND STEAM-ENGINES.

Specification of Letters Patent.

Patented Feb. 14, 1911.

App1ication fi1ed July 15, 1907. Serial No. 383,857.

T 0 all whom it may concern:

Be it known that I, Kant. LINOK, engineer, a subject of the King ofPrussia, and residing at Homburg, in the Palatinate, Germany, haveinvented certain new and useful Improvements in Devices for RapidlyStophereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a device for rapidly stopping compound steamengines working with two or more stages of expansion, by means of whichthe admission of steam to the intermediate or low pressure cylinder iscut off simultaneously with the cutting off of the fresh steam from thehigh pressure cylinder. In known arrangements of this kind a separatecut off valve is provided in the admission pipe to the intermediate orlow pressure valve chest and this valve is connected by a rod with thecut off valve in the admission pipe of the high pressure valve chest sothat both out ofi' valves may be simultaneously closed.

From the known devices of this kind the present invention isdistinguished in that the steam admission ports of the low pressure orintermediate pressure cylinder are closed simultaneously with thecutting otf of the fresh steam from the high pressure cylinder withoutusing any separate cut off valve, there being utilized for this purposemerely the control devices which are used for the cylinders such asshell valves, disk valves, Corliss cocks or valve. These valves or thelike are so constructed that simultaneously with the closing of thefresh steam admission channel they are turned or made to slide so as toclose completely the steam admission ports to the cylinder.

One example of the construction according to this invention which isapplicable for all controlling mechanism, is shown in the accompanyingdrawings, wherein an ordinary shell valve is illustrated. F lgure 1 1s afront view of the valve chest from which the cover has been removed.Fig. 2 is a longitudinal section thereof. Fig. 3 is a diagrammaticsection showing the valve open, and Fig. 4: is a like view showing thevalve closed.

In Fig. 1, a is the valve chest and b the surface on which the Valve ofthe low pressure ping Compound Steam-Engines; and I do cylinder Aslides, the steam inlet and outlet ports 0 (I being provided in thissurface. The valve 0 sliding on this surface has ports f which in thepresent example are in the upper half of the slide and are shorter thanhalf the width of the slide 6 so that when he latter is shifted upwardthe admission ports are completely out off, and no steam can enter thecylinder through them.

The outside face of the slide carries a toothed rack in which gears atoothed sector h mounted on a spindle 2' in the valve chest. One end ofthis spindle extends through the valve chest and is connected with alever arm 7c, itself connected by a system of links Z. W, a, with theadmission valve 0 of the high pressure cylinder in such a manner thatwhen this valve is closed the slide valve c is moved upward so that theunperforated part thereof slides over the admission and exhaust ports ofthe low pres sure cylinder.

hen the admission valve 0 is opened, the slide valve 0 is in theposition shown in Fig. hen the valve 0 is closed the slide valve is inthe position shown in Fig. l, and steam is cut off from the low pressurecylinder.

It is obvious that the invention is not limited to the specificconstruction shown and described and also that the invention isapplicable to the various other well known types of valves.

It is a matter of indifference how the connection between the highpressure steam admission valve and the valve that controls the steam forthe low pressure cylinder is arranged. It is only essential that byclosing the high pressure steam valve the control valve of the lowpressure cylinder should be caused to close completely the admission ofsteam directly to the cylinder itself. In this manner the engine isbrought to rest as quickly as possible.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In combination with a compound engine having anadmission valve to the highpressure cylinder and the usual valvecontrolling the admissionlof steam directly to and from the ports of thelow-pressure cylinder and its operating means, of means connecting saidadmission valve with said usual valve whereby the closing of theadmission valve operates said usual valve to simultaneously close theports of the lowpressure cylinder and hold them closed.

2. In combination with a compound engine having an admission valve tothe highpressure cylinder and the usual valve con trolling the admissonof steam directly to and from the ports of the low-pressure cylinder andits operating means, of means connecting said admission valve with saidusual valve whereby the closing of the ad mission valve simultaneouslyshifts the valve at the low-pressure cylinder to a closed inoperativeposition thus cutting off steam to the low-pressure cylindersimultaneously with the closing of the admission valve Without theemployment of an additional valve therefor.

In testimony whereof I aflix my signature, in presence of two Witnesses.

KARL LINCK.

Vitnesses CARL SOI-IUMANN, WALTER Hhvsnv o.

